Process of manufacturing alloys of copper and iron.



UNITED,- STATES Patented Match 22, 190i;

PATENT @FFICE.

JAMES B. D RLING; or PHILADELPHIA, PENNSYLVANIA, AssioNoR or ONE-HALF TO RICHARD M. POPHAM, or PHILADELPHIA, PENN- SYLVANIA.

PROCESS OF MANUFACTURING ALLOYS OF COPPER AND IRON.

PECIFICATION forming part of Letters Patent No. 755,461, dated March 22, 1904v Application filed June 30, 1903. Serial No. 163,808- (No specimens.)

To all whom it may concern:

Be it known that 1, JAMES D. DARLING, a citizen of the United States, residing at No. 4826 Greenway avenue, in the city and county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Process for the Manufacture of Alloys of Copper and Iron, whereof the following is a specification.

Alloys of these t-wo metals are known to possess valuable properties; but their practical use has been restricted, oying to the difficulty of producing a true alloy s distinguished from a mere mixture of the constituentmetals.

I have found that by the use of the method hereinafter set forth true alloys of iron and copper can be commercially produced and that the ultimate percentages of the ingredients can be controlled so as to yield any predetermined product of a thoroughly homogeneous character.

As typical of the process I will now proceed to describe the application thereof to the production of an alloy containing equal, parts of each metal.

I first prepare a bath by melting in a crucible or any other suitable receptacle or furnace a quantity of metallic copper equal to half the total amount of alloy intended. I then add thereto an intimate mixture of finely-ground ferric oxid and calcium carbid in a quantity slightly exceeding the theoretical proportions according to the formula should be gradually increased to produce the best results, owing to the fact that the mcreasing percenta e of metallic iron, due to l substantially as set forth.

fact that the iron'is presented to the copper in a nascent condition and finely-divided state and that the presence of oxids which would tend to prevent an intimate union is substantially avoided.

As an initial material I may employ the black or magnetic oxid of iron instead of the red oxid above mentioned, the mixture being thus constituted according to the formula This reaction requires less carbid for a given amount of metallic iron and may therefore be advantageous under some circumstances.

If an alloy very high in iron is to be producedsay, for instance, one containing eighty-five per cent. of that metal to fifteen per cent. of copper-I may proceed by first melting the proper amount of iron (obtaining the bath as free as possible from carbon) and then add the copper-containing ingredient in the form of a mixture of cupric oxid and cal-' cium carbid finely ground, the proportions of the mixture itself being constituted according to the formala 3ouo+oact sou+oao+ecoi Having thus described my invention, I

claim l. The here1nbeforedescribed process tor the manufacture of alloys of copper and iron,

which consists in preparing a melted bath of one of said constituents in metallicform and adding thereto a mixture'of an oxid of the other constituent metal with calcium carbid,

4 The hm'e'bbefore descl'ibed process f r mzmu zgacfid-um oi alldys of copper and won,

which comist in preparing a bath of melted mp wr and adding thereto a mixture of an @Xidi of iron. with calcium aarbid, substantiaily as set "forth.

witness whereof have'sign'ed my namg to this specificatiomthis 20th day Of June, A. D. 1903,, in-the presence of t wo su'b sgi'ib ing wit;- 

